CVE-2024-46716: dmaengine: altera-msgdma: properly free descriptor in msgdma_free_descriptor
In the Linux kernel, the following vulnerability has been resolved:
dmaengine: altera-msgdma: properly free descriptor in msgdmafreedescriptor
Remove listdel call in msgdmachandesccleanup, this should be the role of msgdmafreedescriptor. In consequence replace listaddtail with listmovetail in msgdmafreedescriptor.
This fixes the path: msgdmafreechanresources -> msgdmafreedescriptors -> msgdmafreedesclist -> msgdmafreedescriptor
which does not correctly free the descriptors as first nodes were not removed from the list.
Affected Software
Remediation
Recommended actions to resolve this vulnerability, in priority order.
- Upgrade
Upgrade
debian/linuxto a version that resolves this vulnerability.Fixed in 6.1.176-1Fixed in 6.1.190-1Fixed in 6.12.107-1Fixed in 6.12.113-1Fixed in 7.2.12-1Fixed in 7.2.13-1 - Upgrade
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ubuntu/linux-aws-6.8to a version that resolves this vulnerability.Fixed in 6.8.0-1020.22~22.04.1 - Upgrade
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ubuntu/linux-azure-6.8to a version that resolves this vulnerability.Fixed in 6.8.0-1020.23~22.04.1 - Upgrade
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ubuntu/linux-gcp-6.8to a version that resolves this vulnerability.Fixed in 6.8.0-1019.21~22.04.1 - Upgrade
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ubuntu/linux-hwe-6.8to a version that resolves this vulnerability.Fixed in 6.8.0-50.51~22.04.1 - Upgrade
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ubuntu/linux-ibm-6.8to a version that resolves this vulnerability.Fixed in 6.8.0-1017.17~22.04.1 - Upgrade
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ubuntu/linux-lowlatency-hwe-6.8to a version that resolves this vulnerability.Fixed in 6.8.0-50.51.1~22.04.1 - Upgrade
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ubuntu/linux-nvidia-6.8to a version that resolves this vulnerability.Fixed in 6.8.0-1019.21~22.04.1 - Upgrade
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ubuntu/linux-oracle-6.8to a version that resolves this vulnerability.Fixed in 6.8.0-1017.18~22.04.1 - Upgrade
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ubuntu/linux-riscv-6.8to a version that resolves this vulnerability.Fixed in 6.8.0-50.51.1~22.04.1 - Upgrade
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ubuntu/linux-realtime-6.8to a version that resolves this vulnerability.Fixed in 6.8.1-1013.14~22.04.1 - Upgrade
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ubuntu/linuxto a version that resolves this vulnerability.Fixed in 6.8.0-50.51 - Upgrade
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ubuntu/linux-awsto a version that resolves this vulnerability.Fixed in 6.8.0-1020.22 - Upgrade
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ubuntu/linux-azureto a version that resolves this vulnerability.Fixed in 6.8.0-1020.23 - Upgrade
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ubuntu/linux-gcpto a version that resolves this vulnerability.Fixed in 6.8.0-1019.21 - Upgrade
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ubuntu/linux-gketo a version that resolves this vulnerability.Fixed in 6.8.0-1015.19 - Upgrade
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ubuntu/linux-gkeopto a version that resolves this vulnerability.Fixed in 6.8.0-1002.4 - Upgrade
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ubuntu/linux-ibmto a version that resolves this vulnerability.Fixed in 6.8.0-1017.17 - Upgrade
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ubuntu/linux-lowlatencyto a version that resolves this vulnerability.Fixed in 6.8.0-50.51.1 - Upgrade
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ubuntu/linux-nvidiato a version that resolves this vulnerability.Fixed in 6.8.0-1019.21 - Upgrade
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ubuntu/linux-nvidia-lowlatencyto a version that resolves this vulnerability.Fixed in 6.8.0-1019.21.1 - Upgrade
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ubuntu/linux-oem-6.8to a version that resolves this vulnerability.Fixed in 6.8.0-1018.18 - Upgrade
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ubuntu/linux-oracleto a version that resolves this vulnerability.Fixed in 6.8.0-1017.18 - Upgrade
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ubuntu/linux-raspito a version that resolves this vulnerability.Fixed in 6.8.0-1016.18 - Upgrade
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ubuntu/linux-riscvto a version that resolves this vulnerability.Fixed in 6.8.0-50.51.1 - Upgrade
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ubuntu/linux-xilinxto a version that resolves this vulnerability.Fixed in 6.8.0-1017.18 - Upgrade
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ubuntu/linux-raspi-realtimeto a version that resolves this vulnerability.Fixed in 6.8.0-2015.16 - Upgrade
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ubuntu/linux-realtimeto a version that resolves this vulnerability.Fixed in 6.8.1-1013.14 - Upgrade
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ubuntu/linux-fipsto a version that resolves this vulnerability.Fixed in 6.8.0-78.78+fips1 - Configuration
In dmaengine/altera-msgdma, in msgdma_free_descriptor replace list_add_tail with list_move_tail.
Linux kernel (dmaengine: altera-msgdma) Use list_move_tail instead of list_add_tail in msgdma_free_descriptor = list_move_tail (replace list_add_tail) - Configuration
In dmaengine/altera-msgdma, remove the list_del call in msgdma_chan_desc_cleanup, so descriptor removal/freeing is handled by msgdma_free_descriptor.
Linux kernel (dmaengine: altera-msgdma) Remove list_del call in msgdma_chan_desc_cleanup = remove list_del call
Event History
Frequently Asked Questions
What is the severity of CVE-2024-46716?
CVE-2024-46716 is classified as a moderate severity vulnerability affecting the Linux kernel.
How do I fix CVE-2024-46716?
To fix CVE-2024-46716, ensure your Linux kernel is updated to versions 6.1.123-1, 6.1.119-1, 6.12.9-1, or 6.12.10-1.
Which systems are affected by CVE-2024-46716?
CVE-2024-46716 affects Debian Linux packages such as linux and linux-6.1.
What type of vulnerability is CVE-2024-46716?
CVE-2024-46716 is a memory management issue related to descriptor handling in the dmaengine of the Linux kernel.
Is there a workaround for CVE-2024-46716?
There are no known workarounds for CVE-2024-46716; applying the appropriate updates is recommended.